As an industry-leading supplier of cold drawn seamless and DOM-ERW carbon and alloy steel tubing known for its reliability, durability, and exceptional quality,

Ningbo Danyal Pipelines Co., LTD Specializes in sourcing irregular, hard to manufacture shapes and sizes

the type of tubing that demands high-quality craftsmanship and creative engineering and ingenuity to produce. Through our extensive network of carefully custom tubing requirements.

In addition to standard and specialty shapes such as hexagon/round cloverleaf, streamline, and lemon, we have the capacity to provide non-standard tubing with unusual, intricate, and complex profiles, sized to meet your particular/proprietary design specifications. Our extensive unique requirement as well as ASTM, DIN, EN, SAE, and other relevant industry standard. Our decades of experience and deep knowledge of modern tube forming processes provide you with the best opportunity to receive the finest tubing available for your most challenging application

Specialty Shape Tubing Capabilities:

Production Process Drawn Over Mandrel (DOM)
Tube Specifications / Standards ASTM A513 Type 5                        DIN 2391

ASTM A519                                     DIN 2393

ASTM A513 Type 6                        EN 10305-1

ASTM A213 Pressure Tubing       EN 10305-2

SAE J525 Hydraulic Tubing          JIS G 3445

SAE J524 Hydraulic Tubing          Type 5, 11, 22 &others

ASTM A214 Pressure Tubing       And many more Industry Standards

Steel Grades & Alloys 1010                                                4130

1020                                                4140H

1026                                               Additional Alloys Available

Shapes Round                                            Cloverleaf

Oval                                                Streamline

Square                                            Lemon

Rectangular                                   Custom made shapes to order


Value Added Services Precision Cutting to Length        Chamfering

Tolerance as Close as ± 0.004” (depending Custom Made Shapes On Size)

Additional Information:

Industry Focus Aviation                                         Furniture

Automotive and all Related Industries

Unlimited                                      Exercise Equipment